We found this circuit in a magazine 73 from the 90's. It is a circuit indicated for radio-amateur transmitters with the frequencies determined by the sets of coils.
This 1.6 to 20 V power supply, with a maximum current of 3.5 A and protection against short...
The circuit shown in the figure can be used on a data transfer bus using an appropriate family...
This simple circuit operates with only 1.5 volts of a battery and detects low resistance making a...